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A Multidetector Scintillation Camera with 254 Channels

University of Copenhagen and Bispebjerg Hospital, Copenhagen, Denmark

Correspondence: For reprints contact: N. A. Lassen, Dept. of Clinical Physiology, Bispebjerg Hospital, DK-2400 Copenhagen NV, Denmark.

ABSTRACT

A computer-based scintillation camera has been designed for both dynamic and static radionuclide studies. The detecting head has 254 independent sodium iodide crystals, each with a photomultiplier and amplifier. In dynamic measurements simultaneous events can be recorded, and 1 million total counts per second can be accommodated with less than 0.5% loss in any one channel. This corresponds to a calculated deadtime of 5 nsec. The multidetector camera is being used for ¹³³Xe dynamic studies of regional cerebral blood flow in man and for ^99mTc and ¹⁹⁷Hg static imaging of the brain.

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